Commitments And Contingencies (Schedule Of Activity Related To Asbestos Claim) (Detail) (Asbestos Commitments and Contingencies, USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015 Claim	Mar. 31, 2014 Claim	Dec. 31, 2014 Claim	Sep. 30, 2014	Jul. 14, 2008 Year	Jun. 16, 2014	Jun. 30, 2014 Year	Jun. 30, 2009
Loss Contingencies [Line Items]
Number Of Judgments Paid				3
Beginning claims	47,507	51,490	51,490
New claims	633	680	2,743
Settlements	(208)	(303)	(992)
Dismissals	(3,345)	(968)	(5,734)
Ending claims	44,587	50,899	47,507
Joseph Norris [Member]
Loss Contingencies [Line Items]
Jury Verdict Payment Including Accrued Judgment Interest					$ 2.54
Number Of Years After Judgment Paid					2
Ivan Sweberg [Member]
Loss Contingencies [Line Items]
Jury Verdict Total						15.0
Earl Haupt [Member]
Loss Contingencies [Line Items]
Number Of Years After Judgment Paid							2
Jury Verdict Payment								0.02
William Paulus [Member]
Loss Contingencies [Line Items]
Jury Verdict Payment							0.90
NEW YORK
Loss Contingencies [Line Items]
Ending claims	18,600
TEXAS
Loss Contingencies [Line Items]
Ending claims	7,300
Mississippi
Loss Contingencies [Line Items]
Ending claims	5,100
OHIO
Loss Contingencies [Line Items]
Ending claims	300